Container



G. T. HORTON Oct. 21, 1930.

' CONTAINER Filed Oct. 17, 1928 Patented Oct 21, 1930 GEORGE HORTON, OF CHICAGO, ILLINOIS CONTAINER Application filed October 17, 1928. Serial No. 313,092.

This invention relates to improvements in containers, and is here shown as embodied in a container especially adapted for holding 1i%idsunder pressure.

5 he container here shown resembles to a certain extent, the container shown in my prior United States Patent No. 1,622,787 issued March 29, 1927 to which I refer.

In the prior patent referred to I showed a container with a particular curvature and pointed out the advantages thereof. In that patent I showed a container with a fiat bottom. I have found that in some cases it may be advantageous to use a curved bottom instead of a flat bottom. By making the bottom curved, I find that the container when empty or nearly empty of liquid is better able to resist internal gas pressure. As an example, the curved bottom is here shown curved as a segment of a sphere. When the container is nearly empty ofliquid and has considerable gas pressure, there is a tendency for the edges of the bottom to be pulled or curled upwardly by an excess of internal gas 2 pressure. In such cases there is not suflicient weight or head of liquid to hold the bottom down. By making the bottom curved this tendency to distort the same is lessened and the entire structure is strengthened.

Other features and advantages of my invenion will appear more fully as I proceed with my specification.

In that form of device embodying the features of my invention shown in the accompanying drawings, Figure 1 is a diagrammatic view to assist in explaining the curvature of the container, and Fig; 2 is a view partly in side elevation and partly in vertical section.

The diagrammatic view shown in Fig. '1 is equivalent to a vertical sectional view of the tank. The horizontal broken line. 10 may indicate theground line. L The portion below this line as indicated by A I refer to as the bottom and the portion above the same as the container proper as indicated by B.

. The container proper, or body portion thereof, as indicated by B, is of the same curvature as the container shown in my prior Patent No. 1,622,787 of March 29, 1 927 and has all the advantages thereof. Since the manner of laying out this curve and constructing the tank is pointed out fully in the patent referred to I need not describe the same in detail here. It will suffice to say that the body portion B is so shaped that at each point thereon the radius of curvature in a Vertical plane, through a line normal tothe shell at that point, is less than the radius of curvature in a plane at right angles to the first mentioned plane and also passing through said normal line. It is also so shaped that the radii of the curvature at successive points from the top thereof toward the bottom in a vertical plane through lines normal to the shell at such points are successively shorter.

It is also so curved that the radii of curvature at successive points from the top thereofdown to the bottom in planes at right angles to said vertical plane and also passing through lines normal to the shell at such points are successively shorter from the top down to the point of the greatest horizontal diameter of such body portion and then successively longer from said. point down to the bottom thereof. v

The container is in the shape of a solid of revolution about a vertical axis. 4

The bottom A is-preferably substantially a circular segment of'a sphere and may be supported inv any suitable manner as by resting on the ground 10. m

While I have shown and described certain embodiments of myinvention, it is to be understood that it is capable of many modifications. Changes, therefore, in the construction and arrangement may be made without departing from the spirit and scope ofthe invention disclosed in the appended claims, in which it is my intention to claim all novelty in my invention as broadly as possible in View of the prior art.

What I claimas new, and desire to secure by Letters Patent, is:

1. A closed container substantially in the shape of a solid of revolution about a vertical axis and having a supported segmental spherical bottom, said container so shaped that when substantially filled with a normal liquid and containing a normal internal or vapor 100 pressure, the radius of curvature at each point on the 'shell above the supported bottom in a vertical plane, through a line normal to the shell at that point, equals the vertical tension at such point times the square of the radius of curvature in a plane at right angles to the first mentioned plane and also passing through said normal line, divided by the pressure at such point times the square of said second mentioned radius minus said vertical tension times said first mentioned radius.

2. A closed container substantially in the shape of a solid of revolution about a vertical axis and having a supported segmental spherical bottom, said container so shaped that at each point on the shell above the supported bottom the radius of curvature in a vertical plane, through a line normal to the shell at that point, is less than the radius of curvature in a plane at right angles to the first mentioned plane and also passing through said normal line.

3. A closed container substantially in the shape of a solid of revolution about a vertical axis and having a supported segmental spherical bottom, said container being so shaped that at each point on the shell above the supportedbottom the radius of curvature in a vertical plane, through a line normal to the shell at that point, is less than the radius of curvature in a plane at right angles to the first mentioned plane and also passing through said normal line; said container also I being so shaped that the radii of curvature 'at successive points on the shell from the top thereof down to the supported bottom in a vertical plane, through lines normal to the shell at such points, are successively shorter.

4. A closed container substantially in the shape of a solid of revolution about a vertical axis and having a supported segmental spherical'bottom, said container so shaped that at each point on the shell abovethe supported bottom the radius of curvature in a vertical plane, through a line normal to the shell at that point, is less than the radius of curvature in a plane at. right angles to the first mentioned plane and also passing through said normal line; said container also being so shaped that the radii of curvature at success sive points on the shell from the top thereof down-to the supported bottom in a vertical plane, through lines normal to the shell at such points, are successively shorter; and said container also being so shaped that the radii of curvature at successive points on the shell from the. top thereof down to the supported bottom, in planes at right angles to said verti cal plane, and also passing through lines normal to the shell at such points, are successively shorter from the top of said shell down to the I point of its greatest horizontal diameter, and

successively longer from said point down to the supported bottom.- 5. A closed container substantially in the that the radii of curvature at successive points on the shell from the top thereof down to the supported bottom in a vertical plane, through lines normal to the shell at such points, are successively shorter; said container also being so shaped that the radii of curvature at successive points on the shell from the top thereof down to the supported bottom in planes at right angles to said vertical plane, and also passing through lines normal to the shell at such points, are successively shorter from the top of said shell down to the point of its greatest horizontal diameter and from such point are successively longer down to the supported bottom.

6. A closed container substantially in the shape of a solid of'revolution about a vertical axis and having a supported segmental spherical bottom, said container being so shaped that the radii of curvature at successive points on the shell from the top thereof down to the supported bottom in planes at right angles to a vertical plane, and passing through lines" normal to the shell at such points, are succes I sively' shorter from the top of the shell down to the point of its greatest horizontal diameter and from such point are successively longer down to the supported bottom.-

7. A closed container for a volatile liquid substantially in the shape ofa solid of revolution about a vertical central axis, every vertical central cross-section of which is an area bounded by a curve the bottom portion of which is rounded downwardly and of which the arcs from the bottom portion to the top central point have successively longer radii, the whole curve being a function of the Weight and pressure of a liquid for which the container is designed substantially as set forth.

8. A closed container for a volatile liquid substantially in the shape of a solid of revolution about a vertical central axis, every vertical central cross-section of which is an area bounded by a curve the bottom portion of which is rounded downwardly and of which the arcs from the bottom portion to the top 'centralpoint have difierent radii, those of the upper arcs being substantially longer than those of the lowerarcs, the whole I curve being a function of the weightand pressure of a liquid for which the container is designed substantially as set forth.

. 10. A closed container substantially ,in the shape of a solid of revolution about a vertical axis and having a supported downwardly curved bottom, said container so shaped that when substantially filled with a normal liquid and containing anormal internal or vapor pressure, the radius of curvature at each point on the shell above the supported bottom in a vertical plane, through a linenormal to the shell at that point, equals the vertical tension at such point times the supported bottom the radius of curvature in avertical plane, through a line normal to the shell at that point, is less than the radius of curvature in a plane at right angles to the first mentioned plane and also passing through said normal line.

12. A closed container substantially in the shape of a solid of revolution about a vertical axis and having a supported downwardly curved bottom, said container being so shaped that at each point on the shell above the supported bottom the radius of curvature in a vertical plane, through a line norinal to the shell at that point, is less than the radius of curvature in a plane at right angles to the first mentioned plane and also passing through said normal line; said container also being so, shaped that the radii of curvature at successive points on the shell from the top thereof down ',to the supported bottom in a vertical plane, through lines normal to the shell at such points, are successively shorter. v a

13. A closed container substantially in the shape of a solid of revolution about a vertical axis and having a supported downwardly curved bottom, said container so shaped that at each point on the shell above the supported bottom the radius of curvature in a vertical plane, through a line normal to the shell at that point, is less than the radius of curvature in a plane at right angles to the first mentioned planeand also passing through said normal line; said container also being so shaped that the radii ,of curvature at successive points on the shell from the top thereof down to the supported bottom in a vertical plane, through lines normal to the shell at such'points, are successively shorter; and said container also being so shaped that the radii of curvature at successi'velpoints on the shell from the top thereof down to the supported bottom, in planes at right angles to said vertical plane, and also passing through lines normal to the shell at such points, are successively shorter from the top of said shell down to the point of its greatest horizontal. diameter, and successively longer from said point down to the supported bottom.

14:. A closed container substantially in the shape of a solid of revolution about a vertical axis and having a supported downwardly curved bottom, said container being so shaped that the radii of curvature at successive points on the shell from the'top thereof down to the I supported bottom in a vertical plane, through lines normal to the shell at such points, are successively shorter; said container also being so shaped that the radii of curvature at successive points on the shell from the top thereof down to the supported bottom in planes at right angles to said vertical plane, and also passing through lines normal to the shell at such points, are successively shorter from the top of said shell down to the point of its greatest horizontal diameter and from such point are successively longer down to the supported bottom.

15. A closed container substantially in the I shape of a' solid of revolution about a vertical axis and having a supported downwardly curved bottom, said container being so shaped that the radii of curvature at successive points on the shell from the top thereof down to the supported bottom in planes at right angles to a vertical plane, and passing through lines normal to the shell at such points, are successively shorter from the top of the shell down to the point of its greatest horizontal diameter and from such point are successively longer down to the supported bottom.

In witness whereof, I have hereunto set my hand this 15th day ofOctober, 1928.

GEORGE T. HORTON. 

